First English Civil War: Prince Maurice abandoned his siege of Lyme Regis in Dorset after learning of the approach of a Parliamentarian relief force.

The First English Civil War took place in England and Wales from 1642 to 1646, and forms part of the 1639 to 1653 Wars of the Three Kingdoms. An estimated 15% to 20% of adult males in England and Wales served in the military at some point between 1639 and 1653, while around 4% of the total population died from war-related causes. These figures illustrate the widespread impact of the conflict on society, and the bitterness it engendered as a result.

Maurice, Prince Palatine of the Rhine KG was the fourth son of Frederick V, Elector Palatine and Princess Elizabeth, daughter of King James VI and I and Anne of Denmark.

The siege of Lyme Regis was an eight-week blockade during the First English Civil War. The port of Lyme Regis, in Dorset, was considered to be of strategic importance because of its position along the main shipping route between Bristol and the English Channel. Thomas Ceeley and Robert Blake commanded the town's Parliamentarian defences during the siege, which was laid by Prince Maurice between 20 April and 16 June 1644.

Roundheads were the supporters of the Parliament of England during the English Civil War (1642–1651). Also known as Parliamentarians, they fought against King Charles I of England and his supporters, known as the Cavaliers or Royalists, who claimed rule by absolute monarchy and the principle of the divine right of kings. The goal of the Roundheads was to give to Parliament the supreme control over executive administration of England.